Method and apparatus for a microchannel plate having a fissured

Details Method and apparatus for a microchannel plate having a fissured Method and apparatus for a microchannel plate having a fissured

1998-03-24

2000-03-21

Meeks, Timothy

Coating processes

Electrical product produced

Electron emissive or suppressive

4271261, 42725511, 42725523, 427259, 427272, C23C 1424

Patent

active

060400005

ABSTRACT:
There is disclosed in a microchannel plate for an image intensifier tube, a fissured material capable of secondary electron emission disposed on a top surface of the microchannel plate. The fissured material has randomized fissures which permit electrons impinging on the material to exhibit increased electron emission along each of the fissures. The fissured material operates as an electron multiplier causing a cascade of electrons for entry into the MCP channels in response to an electron entering a respective one of the fissures. The image intensifier tube includes an evacuated housing with a photo cathode disposed at a first end thereof, and an optic element disposed at a second end thereof. The microchannel plate with the fissured coating on the top surface is disposed in the evacuated housing between the photo cathode and the optic element. There is also disclosed the method of depositing the fissured material onto the microchannel plate comprises placing the MCP in a vacuum, placing the material in a vessel within the vacuum, introducing an inert gas into the vacuum, and evaporating the material onto the surface of the MCP by heating the material to the vapor point, so as to cause the material to be deposited in the fissured configuration.

REFERENCES:
patent: 4051403 (1977-09-01), Feingold et al.
patent: 5029963 (1991-07-01), Naselli et al.
patent: 5084780 (1992-01-01), Phillips
patent: 5624706 (1997-04-01), Goukassian

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